Contra Costa County property record for 4230 S Castro St, Martinez, CA 94553 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 1.5 Baths |
| Year Built | Built 1948 |
| Square Footage | 1,463 sqft Living Area |
| Lot Size | 15,681 sqft (0.36 acres) |
| Garage | Carport, 1,636 sqft |
| Last Sale | $500,000 (2005) |
| Tax Bill | $9,360.00 (2025) |
| Primary APN | 370-292-008-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 5 Rooms |
| Building Area | 1,463 sqft Living Area |
| 1st Floor | 1,463 sqft 1st Floor |
| Stories | 1 Stories |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Lot Area | 15,681 sqft (0.36 acres) |
| Parking Spaces | 6 Parking Spaces |
| Garage Type | Carport Garage |
| Garage Area | 1,636 sqft Garage |
| Carport | Carport |
| Carport Area | 1,636 sqft Carport |
| Heating System | Central Heating |
|---|
| Street Address | 4230 S CASTRO ST |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3952 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | POR RO EL PINOLE |
| Legal Subdivision | EL PINOLE RHO |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 3 |
| Census Block | 3026 |
| Census Tract | 318000 |
Source: Contra Costa County records · APN 370-292-008-7
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 4230 S CASTRO ST, MARTINEZ, CA 94553-3952 |
| Owner Type | Owner is a Company |
| Vesting | Joint Tenants |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | May 27, 2005 · Amount on Record |
| Deed Sale | May 27, 2005 · Amount on Record |
| Deed Doc Number | 2005191268 |
| Last Transfer Date | May 24, 2019 |
| Transfer Doc | 0000081022 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 31, 2019 |
| Property Address | 4230 S CASTRO ST, MARTINEZ, CA 94553-3952 |
| Document Number | 0000081022 |
| Instrument Date | May 24, 2019 |
| Instrument | 81022 |
| Transaction Type | Transfer |
| Record Updated | Jun 11, 2019 |
| Title Company | OLD REPUBLIC TITLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenant/Joint Tenant w/ Right Of Survivorship |
| Address | 4230 S CASTRO ST MARTINEZ CA 945533952, MARTINEZ, CA 94553-3952 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $705,000 (-1.4%) Land $419,000 Building $286,000 | |
| 2025 | $9,360.00 (+6.64%) | $715,000 (+4.23%) Land $424,794 Building $290,206 |
| 2023 | $8,777.00 (+1.34%) | $686,000 Land $407,564 Building $278,436 |
| 2022 | $8,661.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone AO sheet flow 1–3 ft |
|---|---|
| Flood Hazard | High |
| 100-Year Floodplain | Yes 1% annual chance |
| Special Flood Hazard Area | Yes |
| Flood Insurance Requirement | Required (federally backed mortgages) |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Wildfire Risk | Moderate above 57% of the US · above 34% of California |
|---|---|
| Wildfire Likelihood | About 1 in 746 per year |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values are read at the parcel center point; lenders make the official flood determination.
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